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the major risk factor for chronic bronchitis is a. previous allergies. b. cigarette smoking. c. dust in the air. d. family history.
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the major risk factor for chronic bronchitis is a. previous allergies. b. cigarette smoking. c. dust in the air. d. family history.

User Muhammad Naufil
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2 Answers

5 votes

The answer is A, have a nice day.

User Melchiar
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7.1k points
2 votes
The major risk factor for chronic bronchitis is a/
b. cigarette

User Ramkee
by
6.2k points
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